condition mean min max 12pM Fe 7.0865225 5.0037 9.169345 58pM Fe 0.44696071428571427 0.152673 0.7412484285714286 233pM Fe 1.0790363333333333 1.0790363333333333 1.0790363333333333 1160pM Fe 0.0 0.0 0.0 Dark 3.9785264 2.80373 5.1533228 Light 0.8251993076923076 0.8251993076923076 0.8251993076923076 Phloroglucinol 0.0 0.0 0.0